Goodwill And Other Intangible Assets (Schedule Of Changes In The Carrying Value Of Goodwill) (Details) - USD ($) $ in Thousands	5 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2015	Aug. 14, 2015	Dec. 31, 2016	Dec. 31, 2015
Predecessor [Member]
Goodwill [Roll Forward]
Balance	$ 384,132	$ 420,129	$ 172,059	$ 420,129
Impairment		(35,381)
Currency translation effect		(616)
Balance	172,059	$ 384,132		172,059
Successor [Member]
Goodwill [Roll Forward]
Balance			172,059
Adjustments	1,641		1,058
Goodwill, Transfers			(2,000)
Balance	$ 172,059		$ 171,117	$ 172,059